:root {
  --bg: #0c0d0a;
  --panel: #15170f;
  --phosphor: #3dff6e;
  --phosphor-dim: #1f8f3f;
  --rust: #b4491f;
  --rust-bright: #e8632c;
  --text-dim: #7a8577;
  --line: #2a2f22;
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; background: var(--bg); }
body {
  font-family: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, 'Courier New', monospace;
  color: var(--phosphor);
  padding: 18px 14px 40px;
  min-height: 100vh;
  max-width: 620px;
  margin: 0 auto;
  font-size: 13px;
}
.header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  border-bottom: 1px solid var(--line);
  padding-bottom: 10px;
  margin-bottom: 14px;
}
.header h1 {
  font-size: 15px;
  letter-spacing: 2px;
  margin: 0;
  text-transform: uppercase;
}
.header .tag { font-size: 10px; color: var(--rust-bright); letter-spacing: 1px; }
.nav { display: flex; gap: 6px; margin-bottom: 16px; }
.nav a {
  flex: 1;
  text-align: center;
  padding: 7px;
  border: 1px solid var(--line);
  color: var(--text-dim);
  text-decoration: none;
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
}
.nav a.active { color: var(--phosphor); border-color: var(--phosphor-dim); background: var(--panel); }
.streak-bar { display: flex; gap: 8px; margin-bottom: 18px; }
.stat-box { flex: 1; background: var(--panel); border: 1px solid var(--line); padding: 8px 6px; text-align: center; }
.stat-box .num { font-size: 20px; font-weight: 700; color: var(--rust-bright); }
.stat-box .lbl { font-size: 8px; color: var(--text-dim); letter-spacing: 1px; text-transform: uppercase; margin-top: 2px; }
.section-title {
  font-size: 10px;
  letter-spacing: 2px;
  color: var(--text-dim);
  text-transform: uppercase;
  margin: 20px 0 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.section-title::after { content: ''; flex: 1; height: 1px; background: var(--line); }
.set-row, .extra-row {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 10px 12px;
  margin-bottom: 6px;
}
.set-row.done { border-color: var(--phosphor-dim); }
.extra-row { justify-content: space-between; font-size: 12px; }
.set-row .set-num { color: var(--rust-bright); font-size: 11px; width: 16px; }
.set-row .set-grip { flex: 1; font-size: 12px; }
.set-row .set-grip .grip-target { display: block; font-size: 9px; color: var(--text-dim); margin-top: 2px; }
.reps-input { display: flex; align-items: center; gap: 6px; }
.reps-btn {
  width: 30px;
  height: 30px;
  background: transparent;
  border: 1px solid var(--phosphor-dim);
  color: var(--phosphor);
  font-family: inherit;
  font-size: 15px;
  cursor: pointer;
  line-height: 1;
}
.reps-btn:active { background: var(--phosphor-dim); }
.reps-val { min-width: 26px; text-align: center; font-size: 15px; }
/* --- rest timer --- */
.timer {
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 12px;
  margin-bottom: 6px;
}
.timer.running { border-color: var(--rust); }
.timer.done { border-color: var(--phosphor); }
.timer-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.timer-clock {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: 2px;
  font-variant-numeric: tabular-nums;
  color: var(--phosphor);
}
.timer.running .timer-clock { color: var(--rust-bright); }
.timer-ctl { display: flex; gap: 6px; }
.btn {
  background: transparent;
  border: 1px solid var(--phosphor-dim);
  color: var(--phosphor);
  font-family: inherit;
  font-size: 10px;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 8px 10px;
  cursor: pointer;
}
.btn:active { background: var(--phosphor-dim); color: var(--bg); }
.btn.sm { font-size: 9px; padding: 5px 7px; }
.btn.on { background: var(--phosphor-dim); color: var(--bg); }
.timer-bar { height: 3px; background: var(--line); margin-top: 10px; }
.timer-bar > div { height: 100%; background: var(--rust-bright); width: 0; transition: width 0.25s linear; }
.timer-presets { display: flex; gap: 6px; margin-top: 10px; align-items: center; }
.timer-presets .lbl { font-size: 9px; color: var(--text-dim); letter-spacing: 1px; text-transform: uppercase; }
.save-btn {
  width: 100%;
  padding: 14px;
  margin-top: 20px;
  background: var(--rust);
  border: 1px solid var(--rust-bright);
  color: #0c0d0a;
  font-family: inherit;
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 2px;
  text-transform: uppercase;
  cursor: pointer;
}
.save-btn:active { background: var(--rust-bright); }
.save-btn:disabled { opacity: 0.35; }
.log-entry { border: 1px solid var(--line); padding: 10px 12px; margin-bottom: 6px; font-size: 11px; }
.log-entry .log-date { color: var(--rust-bright); letter-spacing: 1px; font-size: 10px; margin-bottom: 4px; display: flex; justify-content: space-between; }
.log-entry .log-total { color: var(--phosphor); }
.log-entry .log-sets { color: var(--text-dim); }
.log-entry .del {
  background: none; border: none; color: var(--text-dim);
  font-family: inherit; font-size: 10px; cursor: pointer; padding: 0 0 0 8px;
}
.log-entry .del:active { color: var(--rust-bright); }
.empty-state { text-align: center; color: var(--text-dim); font-size: 11px; padding: 20px 0; border: 1px dashed var(--line); }
.toast {
  position: fixed;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--phosphor);
  color: #0c0d0a;
  padding: 8px 16px;
  font-size: 11px;
  letter-spacing: 1px;
  font-weight: 700;
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
  z-index: 10;
}
.toast.show { opacity: 1; }
.toast.err { background: var(--rust-bright); color: #0c0d0a; }
/* --- progress --- */
.chart { background: var(--panel); border: 1px solid var(--line); padding: 12px 10px; margin-bottom: 6px; }
.chart svg { display: block; width: 100%; height: auto; overflow: visible; }
.chart-note { font-size: 9px; color: var(--text-dim); letter-spacing: 1px; text-transform: uppercase; margin-top: 8px; }
.heat { display: grid; grid-auto-flow: column; grid-template-rows: repeat(7, 1fr); gap: 3px; max-width: 300px; margin: 0 auto; }
.heat i { display: block; aspect-ratio: 1; background: #1a1d15; border: 1px solid transparent; }
.heat i.today { border-color: var(--rust-bright); }
.grip-bar { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; font-size: 11px; }
.grip-bar .name { width: 72px; color: var(--text-dim); }
.grip-bar .track { flex: 1; height: 12px; background: #1a1d15; }
.grip-bar .track > div { height: 100%; background: var(--phosphor-dim); }
.grip-bar .val { width: 40px; text-align: right; color: var(--phosphor); }